const mongoose=require("mongoose")

mongoose.connect("mongodb://127.0.0.1:27017/huawei")

mongoose.connection.on("connected",()=>{
  console.log("连接成功");
})
mongoose.connection.on("disconnected",()=>{
  console.log("连接断开");
})
mongoose.connection.on("error",()=>{
  console.log("连接失败");
})
module.exports = mongoose;